If you are sure that both memory pieces are working then you can have at least two explanations to what is happening. First one is the chipset that you have on your motherboard does not support more than 4 Gb of RAM (read the manual for more details). Second is the memory you both cannot work with your motherboard because it uses to low frequency.
You an expand the buffer in your xp computer by adding more ram in your computer. This will speed it up.
Yes, by adding RAM to your computer will increase the performance of your video game.
You can have 2 DVDs in the computer at once, allowing you to copy from one to another faster.
You do not have to reinstall Windows if you wish to add an additional drive. If you want to be able to boot from that drive, or to replace your current boot drive, you will need to install Windows on it.
It is a very important place on the computer. You can create/delete accounts, make or change passwords for the accounts, change the names and pictures, and change the way you switch users.
If you have them you could plug in additional fans allowing the tower to stay cooler.
An low cost desktop computer sale price might be about 200 dollars. Adding more memory or opting for a faster processor, additional disk space will increase the price. A monitor can be an additional hundred dollars.
ROM is an acronym for Read Only Memory, a type of unchangeable memory residing in chips on your motherboard. ROM contains the bare minimum of instructions needed to start your computer. Because it's used for critical functions, it can't be removed short of ripping it out of the motherboard; adding to it is just as difficult. Think of it as analogous to municipal utilities, such as gas and electricity. If you want a different configuration, you'll have to "move on" to a different motherboard or computer. Incidentally, the term "ROM" is also used, not entirely correctly, when referring to some kinds of storage media that can't be modified, such as CD-ROMs.
It depends on your definition of memory card and speed of computer. If you are asking about a removable storage card, then the answer is "no." If you are asking about increasing the physical RAM inside the computer, the answer is "probably," but there may be other factors involved in your particular computer. If you are using a Windows computer with less than 3GB of RAM, then adding RAM almost certainly will make it appear that things are running faster.
Adding additional functionality
There are a number of things that make the personal computer tick. The main piece of hardware in a PC would have to be the motherboard, or main board. The motherboard is where all expansion cards (video cards, network cards, sound cards, R.A.M.) get plugged in, also hard drives connect to the motherboard, as do DVD ROMS and disk drives. The motherboard also houses the processor, or CPU (central processing unit) The power supply or PSU also gets connected to the motherboard, the motherboard then distributes power to all the components of the system.
On Linux you probably already have all or most of the needed tools, so you just run, configure, make, and make install. If it is your first time, you may need to install additional libraries and tweak the configuration. On Windows, you need to install Microsoft Visual C++ with some additional steps explained in the link I am adding as a reference.